<template>
  <div>
    <!--商品分类三级列表-->
    <TypeNav />
    <div class="main">
      <div class="py-container">
        <!--bread：面包屑，带有x的结构-->
        <div class="bread">
          <ul class="fl sui-breadcrumb">
            <li>
              <a href="#">全部结果</a>
            </li>
          </ul>
          <ul class="fl sui-tag">
            <!--分类的面包屑-->
            <li class="with-x" v-if="searchParams.categoryname" >{{searchParams.categoryname}}
              <i @click="removeCategoryName">×</i>
            </li>
            <!--关键字的面包屑-->
            <li class="with-x" v-if="searchParams.keyword" >{{searchParams.keyword}}
              <i @click="removeKeyword">×</i>
            </li>
            <!--品牌的面包屑-->
            <li class="with-x" v-if="searchParams.trademark" >{{searchParams.trademark.split(':')[1]}}
              <i @click="removeTrademark">×</i>
            </li>
            <!--平台售卖属性的面包屑-->
            <li class="with-x" v-for="(attrValue,index) in searchParams.props" :key="index" >{{attrValue.split(':')[1]}}
              <i @click="removeAttr(index)">×</i>
            </li>
          </ul>
        </div>

        <!--selector-->
        <SearchSelector @trademarkInfo="trademarkInfo" @attrInfo="attrInfo"/>

        <!--details-->
        <div class="details clearfix">
          <div class="sui-navbar">
            <div class="navbar-inner filter">
              <!--排序的结构  iconfont样式的css引入在index.html中-->
              <ul class="sui-nav">
                <li :class="{active: isOne}" @click="changeOrder(1)">
                  <a >综合<span v-show="isOne" class="iconfont" :class="{'icon-up': isAsc,'icon-down': isDesc}"></span></a>
                </li>
                <li :class="{active: isTwo}" @click="changeOrder(2)">
                  <a >价格<span v-show="isTwo" class="iconfont" :class="{'icon-up': isAsc,'icon-down': isDesc}"></span></a>
                </li>
              </ul>
            </div>
          </div>
          <!--销售产品列表-->
          <div class="goods-list">
            <ul class="yui3-g">
              <li class="yui3-u-1-5" v-for="good in goodsList" :key="good.id">
                <div class="list-wrap">
                  <div class="p-img">
                    <!--在路由跳转的时候切记别忘记带id（params）参数-->
                    <router-link :to="`/detail/${good.id}`">
                      <img v-lazy="good.defaultImg" />
                    </router-link>
                  </div>
                  <div class="price">
                    <strong>
                      <em>¥ </em>
                      <i>{{good.price}}</i>
                    </strong>
                  </div>
                  <div class="attr">
                    <a target="_blank" href="item.html" title="促销信息，下单即赠送三个月CIBN视频会员卡！【小米电视新品4A 58 火爆预约中】">{{good.title}}</a>
                  </div>
                  <div class="commit">
                    <i class="command">已有<span>2000</span>人评价</i>
                  </div>
                  <div class="operate">
                    <a href="success-cart.html" target="_blank" class="sui-btn btn-bordered btn-danger">加入购物车</a>
                    <a href="javascript:void(0);" class="sui-btn btn-bordered">收藏</a>
                  </div>
                </div>
              </li>
            </ul>
          </div>
          <!--分页器-->
          <Pagination :pageNo="searchParams.pageNo" :pageSize="searchParams.pageSize" :total="total" :continues="5" @getPageNo="getPageNo"/>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
  import SearchSelector from './SearchSelector/SearchSelector'
  import {mapGetters,mapState} from 'vuex'
  export default {
    name: 'Search',
    props: ['categoryid','categoryname'],
    components: {
      SearchSelector
    },
    data () {
        return {
            //带给服务器的参数
            searchParams:{
              //一级分类id
              category1id: '',
              //二级分类id
              category2id: '',
              //三级分类id
              category3id: '',
              //分类名字
              categoryname: '',
              //关键字
              keyword: '',
              //排序：初始状态应该是综合且降序
              order: '1:desc',
              //分页器用的：代表的是当前是第几页
              pageNo: 1,
              //代表的是每一个展示数据个数
              pageSize: 10,
              //平台售卖属性操作 带的参数
              props: [],
              //品牌
              trademark: ''
            }
        }
    },
    //组件挂载完毕之前执行一次
    beforeMount(){
      //Object.assign：ES6新增的语法，合并对象（再给服务器发请求之前，把参数整理好，服务器就会返回查询的数据）
      Object.assign(this.searchParams,this.$route.query,this.$route.params);
    },
    //只会执行一次
    mounted () {
      //在发请求之前带给服务器参数【searchParams参数发生变化有数值带给服务器】
      this.getData();  
    },
    computed:{
      //mapGetters里面的写法：传递数组，因为getters计算是没有划分模块的【home，search】
      ...mapGetters(['goodsList']),
      isOne(){
        return this.searchParams.order.indexOf('1') != -1;
      },
      isTwo(){
        return this.searchParams.order.indexOf('2') != -1;
      },
      isAsc(){
        return this.searchParams.order.indexOf('asc') != -1;
      },
      isDesc(){
        return this.searchParams.order.indexOf('desc') != -1;
      },
      //获取search模块展示产品一共多少数据
      ...mapState({
        total: state=>state.search.searchList.total
      })
    },
    methods: {
        //向服务器发请求，获取search模块的数据（根据参数不同，返回不同的数据）
        //把这次请求封装为一个函数，当你需要在调用即可
        getData(){
          this.$store.dispatch('getSearchList',this.searchParams); 
        },
        removeCategoryName(){
          //把带给服务器的参数置空，还需要向服务器发请求
          //此时带给服务器的参数可有可无，故可赋值为undefined
          this.searchParams.categoryname = undefined;
          // this.searchParams.category1id = undefined;
          // this.searchParams.category2id = undefined;
          // this.searchParams.category3id = undefined;
          // this.getData();

          //地址栏也需要改：进行路由跳转
          //触发路由监听发送请求
          if(this.$route.params){
            this.$router.push({name:'search',params: this.$route.params});
          }
          
        },
        removeKeyword(){
          //给服务器带的参数searchParams的keyword置空
          this.searchParams.keyword = undefined;
          
          //通知兄弟组件Header清除关键字
          this.$bus.$emit('clear');

          //触发路由监听发送请求
          if(this.$route.query){
            this.$router.push({name: 'search',query: this.$route.query});
          }

          
          
        },
        //品牌自定义事件的回调函数 
        trademarkInfo(trademark){
          this.searchParams.trademark = `${trademark.tmId}:${trademark.tmName}`;
          this.getData();
        },
        //删除品牌信息
        removeTrademark(){
          //将品牌信息置空
          this.searchParams.trademark = undefined;
          this.getData();
        },
        //自定义事件回调函数
        attrInfo(attr,attrValue){
          //["属性ID:属性值:属性名"]
          let props = `${attr.attrId}:${attrValue}:${attr.attrName}`;
          //数组去重------indexOf() 方法可返回某个指定的字符串值在字符串中首次出现的位置
          if(this.searchParams.props.indexOf(props) == -1){
            
              this.searchParams.props.push(props);
                 
          } 
          //再次发送请求 
           this.getData();   
        },
        //删除售卖属性---从数组添加/删除项目，并返回删除的项目（第一个参数，从该下标开始删除数，第二个参数，删除的个数）   
        removeAttr(index){
          this.searchParams.props.splice(index,1);
          this.getData();
        },
        //商品按综合排序还是价格排序
        changeOrder(flag){
          //flag形参：它是一个标记，代表用户点击的是综合（1）还是价格（2）
          let originOrder = this.searchParams.order;
          //这是获取到的是最开始的状态
          let originFlag = originOrder.split(':')[0];
          let originSort = originOrder.split(':')[1];
          //准备一个新的order属性值
          let newOrder = '';
          //这个语句我能确定点击的一定是综合
          if(flag==originFlag){
            //${}配合反单引号完成拼接字符串的功能
            newOrder = `${originFlag}:${originSort=='desc'?'asc':'desc'}`;
          }else{
            //点击的是价格，此处处理的是第一次点价格，赋予order 价格的初始值，之后页面不刷新，再点击价格，不会来到这个代码片段
            newOrder = `${flag}:${'desc'}`;
          }
          //将新的order赋予searchParams
          this.searchParams.order = newOrder;
          this.getData();
        },
        //自定义事件的回调函数---获取当前第几页
        getPageNo(pageNo){
          //整理带给服务器的参数
          this.searchParams.pageNo = pageNo;
          this.getData();
        }
    },
    watch: {
        //监听路由的信息是否变化，如果发生变化，再次发起请求
        $route:{
          handler(newValue,oldValue){
            //三级分类id需要清空，分类名字与关键字不用清理，因为每一次路由发生变化时，都会重新给它赋予新值
            this.searchParams.category1id = undefined;
            this.searchParams.category2id = undefined;
            this.searchParams.category3id = undefined;

            //再次发起请求整理带给服务器参数
            Object.assign(this.searchParams,this.$route.query,this.$route.params);
            //再次发起ajax请求
            this.getData();
          } 
        }
    } 
  }
</script>

<style lang="less" scoped>
  .main {
    margin: 10px 0;

    .py-container {
      width: 1200px;
      margin: 0 auto;

      .bread {
        margin-bottom: 5px;
        overflow: hidden;

        .sui-breadcrumb {
          padding: 3px 15px;
          margin: 0;
          font-weight: 400;
          border-radius: 3px;
          float: left;

          li {
            display: inline-block;
            line-height: 18px;

            a {
              color: #666;
              text-decoration: none;

              &:hover {
                color: #4cb9fc;
              }
            }
          }
        }

        .sui-tag {
          margin-top: -5px;
          list-style: none;
          font-size: 0;
          line-height: 0;
          padding: 5px 0 0;
          margin-bottom: 18px;
          float: left;

          .with-x {
            font-size: 12px;
            margin: 0 5px 5px 0;
            display: inline-block;
            overflow: hidden;
            color: #000;
            background: #f7f7f7;
            padding: 0 7px;
            height: 20px;
            line-height: 20px;
            border: 1px solid #dedede;
            white-space: nowrap;
            transition: color 400ms;
            cursor: pointer;

            i {
              margin-left: 10px;
              cursor: pointer;
              font: 400 14px tahoma;
              display: inline-block;
              height: 100%;
              vertical-align: middle;
            }

            &:hover {
              color: #28a3ef;
            }
          }
        }
      }

      .details {
        margin-bottom: 5px;

        .sui-navbar {
          overflow: visible;
          margin-bottom: 0;

          .filter {
            min-height: 40px;
            padding-right: 20px;
            background: #fbfbfb;
            border: 1px solid #e2e2e2;
            padding-left: 0;
            border-radius: 0;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.065);

            .sui-nav {
              position: relative;
              left: 0;
              display: block;
              float: left;
              margin: 0 10px 0 0;

              li {
                float: left;
                line-height: 18px;

                a {
                  display: block;
                  cursor: pointer;
                  padding: 11px 15px;
                  color: #777;
                  text-decoration: none;
                }

                &.active {
                  a {
                    background: #e1251b;
                    color: #fff;
                  }
                }
              }
            }
          }
        }

        .goods-list {
          margin: 20px 0;

          ul {
            display: flex;
            flex-wrap: wrap;

            li {
              height: 100%;
              width: 20%;
              margin-top: 10px;
              line-height: 28px;

              .list-wrap {
                .p-img {
                  padding-left: 15px;
                  width: 215px;
                  height: 255px;

                  a {
                    color: #666;

                    img {
                      max-width: 100%;
                      height: auto;
                      vertical-align: middle;
                    }
                  }
                }

                .price {
                  padding-left: 15px;
                  font-size: 18px;
                  color: #c81623;

                  strong {
                    font-weight: 700;

                    i {
                      margin-left: -5px;
                    }
                  }
                }

                .attr {
                  padding-left: 15px;
                  width: 85%;
                  overflow: hidden;
                  margin-bottom: 8px;
                  min-height: 38px;
                  cursor: pointer;
                  line-height: 1.8;
                  display: -webkit-box;
                  -webkit-box-orient: vertical;
                  -webkit-line-clamp: 2;

                  a {
                    color: #333;
                    text-decoration: none;
                  }
                }

                .commit {
                  padding-left: 15px;
                  height: 22px;
                  font-size: 13px;
                  color: #a7a7a7;

                  span {
                    font-weight: 700;
                    color: #646fb0;
                  }
                }

                .operate {
                  padding: 12px 15px;

                  .sui-btn {
                    display: inline-block;
                    padding: 2px 14px;
                    box-sizing: border-box;
                    margin-bottom: 0;
                    font-size: 12px;
                    line-height: 18px;
                    text-align: center;
                    vertical-align: middle;
                    cursor: pointer;
                    border-radius: 0;
                    background-color: transparent;
                    margin-right: 15px;
                  }

                  .btn-bordered {
                    min-width: 85px;
                    background-color: transparent;
                    border: 1px solid #8c8c8c;
                    color: #8c8c8c;

                    &:hover {
                      border: 1px solid #666;
                      color: #fff !important;
                      background-color: #666;
                      text-decoration: none;
                    }
                  }

                  .btn-danger {
                    border: 1px solid #e1251b;
                    color: #e1251b;

                    &:hover {
                      border: 1px solid #e1251b;
                      background-color: #e1251b;
                      color: white !important;
                      text-decoration: none;
                    }
                  }
                }
              }
            }
          }
        }

        .page {
          width: 733px;
          height: 66px;
          overflow: hidden;
          float: right;

          .sui-pagination {
            margin: 18px 0;

            ul {
              margin-left: 0;
              margin-bottom: 0;
              vertical-align: middle;
              width: 490px;
              float: left;

              li {
                line-height: 18px;
                display: inline-block;

                a {
                  position: relative;
                  float: left;
                  line-height: 18px;
                  text-decoration: none;
                  background-color: #fff;
                  border: 1px solid #e0e9ee;
                  margin-left: -1px;
                  font-size: 14px;
                  padding: 9px 18px;
                  color: #333;
                }

                &.active {
                  a {
                    background-color: #fff;
                    color: #e1251b;
                    border-color: #fff;
                    cursor: default;
                  }
                }

                &.prev {
                  a {
                    background-color: #fafafa;
                  }
                }

                &.disabled {
                  a {
                    color: #999;
                    cursor: default;
                  }
                }

                &.dotted {
                  span {
                    margin-left: -1px;
                    position: relative;
                    float: left;
                    line-height: 18px;
                    text-decoration: none;
                    background-color: #fff;
                    font-size: 14px;
                    border: 0;
                    padding: 9px 18px;
                    color: #333;
                  }
                }

                &.next {
                  a {
                    background-color: #fafafa;
                  }
                }
              }
            }

            div {
              color: #333;
              font-size: 14px;
              float: right;
              width: 241px;
            }
          }
        }
      }
    }
  }
</style>